04 Knowledge – Slappy – Green Day Apr 9, 2016 1,039/Smoothed Out Slappy Hours, Bowling Bowling Bowling Parking Parking, Cover Green, Cover GREEN DAY, Cover Knowledge, Cover Punk Rock, Cover Rock, 4th track off the Slappy EP by Green Day. This is a cover of the song by Operation Ivy. Like 0 Thanks! You've already liked this « Disappearing Boy – Green Day Band Cover » Slappy – Live At The Park 2000 – Part 3